<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>jsdom</title>
</head>
<body id="body">
  <div id="scope">
    <div id="first">first</div>
    <div id="second">second</div>
    <div id="third">third</div>
  </div>
</body>
<script src="jsdom.js"></script>
<script src="main.js"></script>
</html>